230 lines
7.3 KiB
Go
230 lines
7.3 KiB
Go
// Copyright 2018 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package core
|
|
|
|
import (
|
|
"bufio"
|
|
"encoding/json"
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
"sync"
|
|
|
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
|
"github.com/ethereum/go-ethereum/console/prompt"
|
|
"github.com/ethereum/go-ethereum/internal/ethapi"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
)
|
|
|
|
type CommandlineUI struct {
|
|
in *bufio.Reader
|
|
mu sync.Mutex
|
|
}
|
|
|
|
func NewCommandlineUI() *CommandlineUI {
|
|
return &CommandlineUI{in: bufio.NewReader(os.Stdin)}
|
|
}
|
|
|
|
func (ui *CommandlineUI) RegisterUIServer(api *UIServerAPI) {
|
|
// noop
|
|
}
|
|
|
|
// readString reads a single line from stdin, trimming if from spaces, enforcing
|
|
// non-emptyness.
|
|
func (ui *CommandlineUI) readString() string {
|
|
for {
|
|
fmt.Printf("> ")
|
|
text, err := ui.in.ReadString('\n')
|
|
if err != nil {
|
|
log.Crit("Failed to read user input", "err", err)
|
|
}
|
|
if text = strings.TrimSpace(text); text != "" {
|
|
return text
|
|
}
|
|
}
|
|
}
|
|
|
|
func (ui *CommandlineUI) OnInputRequired(info UserInputRequest) (UserInputResponse, error) {
|
|
|
|
fmt.Printf("## %s\n\n%s\n", info.Title, info.Prompt)
|
|
defer fmt.Println("-----------------------")
|
|
if info.IsPassword {
|
|
text, err := prompt.Stdin.PromptPassword("> ")
|
|
if err != nil {
|
|
log.Error("Failed to read password", "error", err)
|
|
return UserInputResponse{}, err
|
|
}
|
|
return UserInputResponse{text}, nil
|
|
}
|
|
text := ui.readString()
|
|
return UserInputResponse{text}, nil
|
|
}
|
|
|
|
// confirm returns true if user enters 'Yes', otherwise false
|
|
func (ui *CommandlineUI) confirm() bool {
|
|
fmt.Printf("Approve? [y/N]:\n")
|
|
if ui.readString() == "y" {
|
|
return true
|
|
}
|
|
fmt.Println("-----------------------")
|
|
return false
|
|
}
|
|
|
|
// sanitize quotes and truncates 'txt' if longer than 'limit'. If truncated,
|
|
// and ellipsis is added after the quoted string
|
|
func sanitize(txt string, limit int) string {
|
|
if len(txt) > limit {
|
|
return fmt.Sprintf("%q...", txt[:limit])
|
|
}
|
|
return fmt.Sprintf("%q", txt)
|
|
}
|
|
|
|
func showMetadata(metadata Metadata) {
|
|
fmt.Printf("Request context:\n\t%v -> %v -> %v\n", metadata.Remote, metadata.Scheme, metadata.Local)
|
|
fmt.Printf("\nAdditional HTTP header data, provided by the external caller:\n")
|
|
fmt.Printf("\tUser-Agent: %v\n\tOrigin: %v\n", sanitize(metadata.UserAgent, 200), sanitize(metadata.Origin, 100))
|
|
}
|
|
|
|
// ApproveTx prompt the user for confirmation to request to sign Transaction
|
|
func (ui *CommandlineUI) ApproveTx(request *SignTxRequest) (SignTxResponse, error) {
|
|
ui.mu.Lock()
|
|
defer ui.mu.Unlock()
|
|
weival := request.Transaction.Value.ToInt()
|
|
fmt.Printf("--------- Transaction request-------------\n")
|
|
if to := request.Transaction.To; to != nil {
|
|
fmt.Printf("to: %v\n", to.Original())
|
|
if !to.ValidChecksum() {
|
|
fmt.Printf("\nWARNING: Invalid checksum on to-address!\n\n")
|
|
}
|
|
} else {
|
|
fmt.Printf("to: <contact creation>\n")
|
|
}
|
|
fmt.Printf("from: %v\n", request.Transaction.From.String())
|
|
fmt.Printf("value: %v wei\n", weival)
|
|
fmt.Printf("gas: %v (%v)\n", request.Transaction.Gas, uint64(request.Transaction.Gas))
|
|
fmt.Printf("gasprice: %v wei\n", request.Transaction.GasPrice.ToInt())
|
|
fmt.Printf("nonce: %v (%v)\n", request.Transaction.Nonce, uint64(request.Transaction.Nonce))
|
|
if request.Transaction.Data != nil {
|
|
d := *request.Transaction.Data
|
|
if len(d) > 0 {
|
|
fmt.Printf("data: %v\n", hexutil.Encode(d))
|
|
}
|
|
}
|
|
if request.Callinfo != nil {
|
|
fmt.Printf("\nTransaction validation:\n")
|
|
for _, m := range request.Callinfo {
|
|
fmt.Printf(" * %s : %s\n", m.Typ, m.Message)
|
|
}
|
|
fmt.Println()
|
|
|
|
}
|
|
fmt.Printf("\n")
|
|
showMetadata(request.Meta)
|
|
fmt.Printf("-------------------------------------------\n")
|
|
if !ui.confirm() {
|
|
return SignTxResponse{request.Transaction, false}, nil
|
|
}
|
|
return SignTxResponse{request.Transaction, true}, nil
|
|
}
|
|
|
|
// ApproveSignData prompt the user for confirmation to request to sign data
|
|
func (ui *CommandlineUI) ApproveSignData(request *SignDataRequest) (SignDataResponse, error) {
|
|
ui.mu.Lock()
|
|
defer ui.mu.Unlock()
|
|
|
|
fmt.Printf("-------- Sign data request--------------\n")
|
|
fmt.Printf("Account: %s\n", request.Address.String())
|
|
fmt.Printf("messages:\n")
|
|
for _, nvt := range request.Messages {
|
|
fmt.Printf("\u00a0\u00a0%v\n", strings.TrimSpace(nvt.Pprint(1)))
|
|
}
|
|
fmt.Printf("raw data: \n\t%q\n", request.Rawdata)
|
|
fmt.Printf("data hash: %v\n", request.Hash)
|
|
fmt.Printf("-------------------------------------------\n")
|
|
showMetadata(request.Meta)
|
|
if !ui.confirm() {
|
|
return SignDataResponse{false}, nil
|
|
}
|
|
return SignDataResponse{true}, nil
|
|
}
|
|
|
|
// ApproveListing prompt the user for confirmation to list accounts
|
|
// the list of accounts to list can be modified by the UI
|
|
func (ui *CommandlineUI) ApproveListing(request *ListRequest) (ListResponse, error) {
|
|
ui.mu.Lock()
|
|
defer ui.mu.Unlock()
|
|
|
|
fmt.Printf("-------- List Account request--------------\n")
|
|
fmt.Printf("A request has been made to list all accounts. \n")
|
|
fmt.Printf("You can select which accounts the caller can see\n")
|
|
for _, account := range request.Accounts {
|
|
fmt.Printf(" [x] %v\n", account.Address.Hex())
|
|
fmt.Printf(" URL: %v\n", account.URL)
|
|
}
|
|
fmt.Printf("-------------------------------------------\n")
|
|
showMetadata(request.Meta)
|
|
if !ui.confirm() {
|
|
return ListResponse{nil}, nil
|
|
}
|
|
return ListResponse{request.Accounts}, nil
|
|
}
|
|
|
|
// ApproveNewAccount prompt the user for confirmation to create new Account, and reveal to caller
|
|
func (ui *CommandlineUI) ApproveNewAccount(request *NewAccountRequest) (NewAccountResponse, error) {
|
|
|
|
ui.mu.Lock()
|
|
defer ui.mu.Unlock()
|
|
|
|
fmt.Printf("-------- New Account request--------------\n\n")
|
|
fmt.Printf("A request has been made to create a new account. \n")
|
|
fmt.Printf("Approving this operation means that a new account is created,\n")
|
|
fmt.Printf("and the address is returned to the external caller\n\n")
|
|
showMetadata(request.Meta)
|
|
if !ui.confirm() {
|
|
return NewAccountResponse{false}, nil
|
|
}
|
|
return NewAccountResponse{true}, nil
|
|
}
|
|
|
|
// ShowError displays error message to user
|
|
func (ui *CommandlineUI) ShowError(message string) {
|
|
fmt.Printf("## Error \n%s\n", message)
|
|
fmt.Printf("-------------------------------------------\n")
|
|
}
|
|
|
|
// ShowInfo displays info message to user
|
|
func (ui *CommandlineUI) ShowInfo(message string) {
|
|
fmt.Printf("## Info \n%s\n", message)
|
|
}
|
|
|
|
func (ui *CommandlineUI) OnApprovedTx(tx ethapi.SignTransactionResult) {
|
|
fmt.Printf("Transaction signed:\n ")
|
|
if jsn, err := json.MarshalIndent(tx.Tx, " ", " "); err != nil {
|
|
fmt.Printf("WARN: marshalling error %v\n", err)
|
|
} else {
|
|
fmt.Println(string(jsn))
|
|
}
|
|
}
|
|
|
|
func (ui *CommandlineUI) OnSignerStartup(info StartupInfo) {
|
|
|
|
fmt.Printf("------- Signer info -------\n")
|
|
for k, v := range info.Info {
|
|
fmt.Printf("* %v : %v\n", k, v)
|
|
}
|
|
}
|